NorthStar Portable Gas-Powered Air Compressor -Honda 163cc OHV Engine, 20-Gal Horizontal Tank, 13.7 CFM @ 90 PSI Honda GX160 OHV engine with low oil shutdown Full cast iron pump for long service life V-style cylinder design for superior cooling Pump head made of FC35 Grade cast iron Floating-type Swedish steel valves deliver much longer valve life (1) 20-gallon horizontal gas-powered portable air compressor Honda GX160 OHV engine with low oil shutdown Full cast iron pump for long service life V-style cylinder design for superior cooling Pump head made of FC35 Grade cast iron Floating-type Swedish steel valves deliver much longer valve life Operates at slower RPM to run cooler and last longer Low Vibration Technology (LVT) features a dynamically balanced pump for smooth operation and long life One-piece cast iron crankcase has bearings on both ends of crankshaft for superior crankshaft support, not overhung crankshaft design 100% duty cycle Delivers 13.7 CFM @ 90 PSI 130 max. PSI Oversized flywheel for cooler operation Heavy cast iron flywheel provides extra momentum Step-type piston rings ensure piston ring overlap for better compression Sight glass for quick viewing of oil level Replaceable crank journals and wrist pin journal/needle bearings Two-piece connecting rods can be rebuilt for superior serviceability High pressure piston wrist pins have needle bearings Easy start lever on unloader valve isolates pump from tank pressure, so engine won&#039;t have to start under load Durable steel belt guard Liquid-filled pressure gauge Pressure regulator to control outlet pressure 20-gallon ASME-certified horizontal tank Built-in wheels with handle for easy portability